Blackline Limited Slip Differential - Ford Mustang - Ford 8-inch Axle - 28 splines

The Blackline limited slip differential for the Ford Mustang with an 8-inch Ford axle and 28 splines, also known as an LSD (limited slip differential), improves traction by distributing torque between the two-wheel drive drive wheels based on available grip.

Its helical gear design allows the limited slip differential to transmit more torque to the wheel with the best traction. As torque increases, the gears exert pressure against the differential housing and generate the internal friction necessary for this torque distribution. The system thus allows for better utilization of available traction, particularly during hard acceleration and when exiting corners.

Under light loads, the helical limited slip differential maintains smooth, progressive, and quiet operation. The wheels can continue to rotate at different speeds when necessary, particularly when cornering. This feature enhances traction during spirited driving while maintaining handling suitable for on-road use.

The Blackline limited slip differential uses a parallel-shaft helical gear architecture optimized to distribute forces. Its 5:1 torque split means that when one of the wheels loses traction, the wheel with the most traction can receive up to five times the torque transmitted to the spinning wheel.

As with any helical-gear limited slip differential, a minimum amount of resistance must remain on the wheel with the least grip to allow torque transfer. Its effectiveness is therefore optimal when both wheels maintain a minimum level of traction.

The Blackline HLF018/28 limited slip differential is designed for Ford USA applications equipped with an 8-inch Ford rear axle with 28-spline driveshafts. It is specifically intended for certain Ford Mustang, Fairlane, and Ranchero models, as well as the Mercury Cougar, depending on the year and axle configuration. The axle type and number of splines must be verified before ordering. Its housing and gears are made of high-resistance 8620 steel.

Technical Specifications of the Blackline Limited Slip Differential for Ford Mustang with Ford 8-inch Rear Axle

Manufacturer Part Number: HLF018/28
Quaife Application Match: NC
Type: Helical-gear limited slip differential
Vehicle compatibility: Ford Mustang (1964–1978), depending on configuration
Vehicle compatibility: Ford Fairlane (1962–1978), depending on configuration
Vehicle compatibility: Ford Ranchero (1964–1978), depending on configuration
Vehicle compatibility: Mercury Cougar (1967–1970), depending on configuration
Type of axle: Ford 8-inch rear axle
Splines: 28
Torque split ratio: 5:1
Housing and gear material: High-resistance 8620 steel
Mounting: Direct replacement for the original differential on compatible vehicles

Key Features of the Blackline Limited Slip Differential for the Ford 8-inch Axle

• Torque split between the wheels based on available traction.
• Delivers more torque to the wheel with the best traction.
• Immediate and progressive reaction to changes in traction.
• Smooth, progressive, and quiet operation.
• No friction discs for reduced maintenance requirements.
• Power delivery that is easily controllable, especially during spirited driving and drifting.
• Housing and gears made of high-resistance 8620 steel.
• Direct mounting for the original differential.